Hardnox manufactures and sells the Door Jak series of facility maintenance equipment for transporting and installing heavy and oversized doors including hollow metal, bullet proof, lead lined and solid core doors.

The Door Jak is a door installation allowing one worker to install and transport heavy doors in facilities. Used by carpenters, locksmiths and facility maintenance workers. Model 100 holds 750lbs. Model 50 holds 250lbs.

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doorjak door installation carts allow one worker to safely and easily transport and install commercial, residential and industrial doors. there are currently 2 models to choose from, the heavy-duty doorjak 100 handles doors up to 750 lbs. while the sturdy and portable doorjak 50 carries doors and wall panels up to 250 lbs.